I am fairly new to SQL. I have my code written out where I display a Vendor name and the total amt due for all of their invoices. My issue is, I only need to display those Vendors that has a total greater than $0.00. Any insight would be greatly appreciated.
SELECT DISTINCT VENDOR_NAME, TO_CHAR(SUM(INVOICE_TOTAL-PAYMENT_TOTAL-CREDIT_TOTAL), '$999,999.99') AS AMTDUE
FROM AP.VENDORS, AP.INVOICES
WHERE AP.VENDORS.VENDOR_ID = AP.INVOICES.VENDOR_ID
GROUP BY VENDOR_NAME;
Code displays:
Use a having clause:
SELECT VENDOR_NAME,
TO_CHAR(SUM(INVOICE_TOTAL-PAYMENT_TOTAL-CREDIT_TOTAL), '$999,999.99') AS AMTDUE
FROM AP.VENDORS V JOIN
AP.INVOICES I
ON V.VENDOR_ID = I.VENDOR_ID
GROUP BY VENDOR_NAME
HAVING SUM(INVOICE_TOTAL - PAYMENT_TOTAL-CREDIT_TOTAL) > 0;
Notes:
Never use commas in the FROM clause.
Always use proper, explicit, standard, readable JOIN syntax.
Use table aliases.
Qualify all column names. I don't know where they come from, but I would guess most should be preceded by I..
Related
I have the next data base:
Table Bill:
Table Bill_Details:
And Table Type:
I want a query to show this result:
The query as far goes like this:
SELECT
Bill.Id_Bill,
Type.Id_Type,
Type.Info,
Bill_Details.Deb,
Bill_Details.Cre,
Bill.NIT,
Bill.Date2,
Bill.Comt
FROM Type
RIGHT JOIN (Bill INNER JOIN Bill_Details
ON Bill.Id_Bill = Bill_Details.Id_Bill)
ON Type.Id_Type = Bill_Details.Id_Type
ORDER BY Bill.Id_Bill, Type.Id_Type;
With this result:
I'm not sure how to deal or how to include this:
Type.600,
Type."TOTAL",
IIF(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre) >= 0, ABS(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre)), "" ),
IIF(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre) <= 0, ABS(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre)), "" )
The previous code is the responsable of include new data in some fields, since all of the other fields will carry the same data of the upper register. I'll apreciate some sugestions to acomplish this.
Here is a revised version of the UNION which you removed from the question. The original query was a good start, but you just did not provide sufficient details about the error or problem you were experiencing. My comments were not meant to have you remove the problem query, only that you needed to provide more details about the error or problem. In the future if you have a UNION, make sure the each query of the UNION works separately. Then you could debug problems easier, one step at a time.
Problems which I corrected in the second query of the UNION:
Removed reference to table [Type] in the query, since it was not part of the FROM clause. Instead, I replaced it with a literal value.
Fixed FROM clause to join both [Bill] and [Bill_Details] tables. You had fields from both tables, so why would you not join on them just like in the first query of the UNION?
Grouped on all fields from table [Bill] referenced in the SELECT clause. You must either group on all fields, or include them in aggregate expressions like Sum() or First(), etc.
Replaced empty strings with Nulls for the False cases on Iif() statements.
SELECT
Bill.Id_Bill, Type.Id_Type, Type.Info,
Bill_Details.Deb,
Bill_Details.Cre,
Bill.NIT, Bill.Date2, Bill.Comt
FROM
Type RIGHT JOIN (Bill INNER JOIN Bill_Details
ON Bill.Id_Bill = Bill_Details.Id_Bill)
ON Type.Id_Type = Bill_Details.Id_Type;
UNION
SELECT
Bill.Id_Bill, 600 As Id_Type, "TOTAL" As Info,
IIF(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre) >= 0, ABS(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre)), Null ) As Deb,
IIF(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre) <= 0, ABS(SUM(Bill_Details.Deb) - Sum(Bill_Details.Cre)), Null ) As Cre,
Bill.NIT, Bill.Date2, Bill.Comt
FROM Bill INNER JOIN Bill_Details
ON Bill.Id_Bill = Bill_Details.Id_Bill
GROUP BY Bill.Id_Bill, Bill.NIT, Bill.Date2, Bill.Comt;
I've got a query over here that I need to modify, but I can't figure out how.
I only want to show the color (aka kleur) where aantal_planten is lower than five.
Any suggetions?
Here's the query:
SELECT kleur, COUNT(plant.plantcode) AS aantal_planten
FROM plant, offerte
WHERE plant.plantcode = offerte.plantcode
GROUP BY kleur;
Here's the database structure
You should learn proper explicit JOIN syntax. Simple rule: Never use commas in the FROM clause. Always use explicit JOIN syntax.
The answer to your question is a HAVING clause:
SELECT kleur, COUNT(p.plantcode) AS aantal_planten
FROM plant p JOIN
offerte o
ON p.plantcode = o.plantcode
GROUP BY kleur
HAVING COUNT(p.plantcode) < 5;
Also notice that table aliases makes the query easier to write and to read.
I'm trying to select a bunch of patients with their unit and division and I want to group the result by unit name, but this code doesn't execute and gives the error as the topic of this question.
SELECT TOP (100) PERCENT
Pat.PatName AS Name,
srvDiv.sgMType AS Perkhidmatan,
Pat.PatMRank AS Pangkat,
Pat.PatMilitaryID AS [No# Tentera],
unt.untName AS Unit,
fct.pesStatusCode as StatusCode,
fct.pesSignedDate AS SignedDate
FROM dbo.FactPES AS fct INNER JOIN
dbo.DimPatient AS Pat ON fct.pesPatID = Pat.PatID LEFT OUTER JOIN
dbo.DimUnit AS unt ON fct.pesUnitID = unt.untID LEFT OUTER JOIN
dbo.DimServiceDiv AS srvDiv ON fct.pesServiceDivID = srvDiv.sgID
GROUP BY unt.untName
HAVING (deas.diDate BETWEEN
CONVERT(DATETIME, #FromDate, 102)
AND
CONVERT(DATETIME, #ToDate, 102))
I assume it's because unt.UntName is in my left join so I can't use it outside the join maybe ? I'm a bit confused because when I put it like this it works:
GROUP BY unt.untName, Pat.PatName, srvDiv.sgMType,
Pat.PatMRank, Pat.PatMilitaryID, unt.untName,
fct.pesStatusCode, fct.pesSignedDate
Any help is appreciated
First, please don't use TOP (100) PERCENT; it hurts even to read.
Second, your query contains no aggregate function, no SUM or COUNT for example. When you say you want to "group by unit name", I suspect you may simply want the results sorted by unit name. In that case, you want ORDER BY instead. (The advice from other to study what group by does is well taken.)
Finally, you might not need those CONVERT functions at the end, depending on your DBMS.
Whenever you use a GROUP BY - it should be present in the SELECT statement as a column. And if you do not want to contain it in a GROUP BY use it as an AGGREGATE column in SELECT.
So now in your case the second GROUP BY stated in your question will work.
Read this to understand more about GROUP BY
The query I'm running in DB2
select yrb_customer.name,
yrb_customer.city,
CASE count(*) WHEN 0 THEN 0 ELSE count(*) END as #UniClubs
from yrb_member, yrb_customer
where yrb_member.cid = yrb_customer.cid and yrb_member.club like '%Club%'
group by yrb_customer.name, yrb_customer.city order by count(*)
Shows me people which are part of clubs which has the word 'Club' in it, and it shows how many such clubs they are part of (#UniClubs) along with their name and City. However for students who are not part of such a club, I would still like for them to show up but just have 0 instead of them being hidden which is what's happening right now. I cannot get this functionality with count(*). Can somebody shed some light? I can explain further if the above is not clear enough.
I'm not familiar with DB2 so I'm taking a stab in the dark, but try this:
select yrb_customer.name,
yrb_customer.city,
CASE WHEN yrb_member.club like '%Club% THEN count(*) ELSE 0 END as #UniClubs
from yrb_member, yrb_customer
where yrb_member.cid = yrb_customer.cid
group by yrb_customer.name, yrb_customer.city order by count(*)
Basically you don't want to filter for %Club% in your WHERE clause because you want ALL rows to come back.
You're going to want a LEFT JOIN:
SELECT yrb_customer.name, yrb_customer.city,
COUNT(yrb_member.club) as clubCount
FROM yrb_customer
LEFT JOIN yrb_member
ON yrb_member.cid = yrb_customer.cid
AND yrb_member.club LIKE '%Club%
GROUP BY yrb_customer.name, yrb_customer.city
ORDER BY clubCount
Also, if the tuple (yrb_customer.name, yrb_customer.city) is unique (or is supposed to be - are you counting all students with the same name as the same person?), you might get better performance out of the following:
SELECT yrb_customer.name, yrb_customer.city,
COALESCE(club.count, 0)
FROM yrb_customer
LEFT JOIN (SELECT cid, COUNT(*) as count
FROM yrb_member
WHERE club LIKE '%Club%
GROUP BY cid) club
ON club.cid = yrb_customer.cid
ORDER BY club.count
The reason that your original results were being hidden was because in your original query, you have an implicit inner join, which of course requires matching rows. The implicit-join syntax (comma-separated FROM clause) is great for inner (regular) joins, but is terrible for left-joins, which is what you really needed. The use of the implicit-join syntax (and certain types of related filtering in the WHERE clause) is considered deprecated.
So I decided to try out PostgreSQL instead of MySQL but I am having some slight conversion problems. This was a query of mine that samples data from four tables and spit them out all in on result.
I am at a loss of how to convey this in PostgreSQL and specifically in Django but I am leaving that for another quesiton so bonus points if you can Django-fy it but no worries if you just pure SQL it.
SELECT links.id, links.created, links.url, links.title, user.username, category.title, SUM(votes.karma_delta) AS karma, SUM(IF(votes.user_id = 1, votes.karma_delta, 0)) AS user_vote
FROM links
LEFT OUTER JOIN `users` `user` ON (`links`.`user_id`=`user`.`id`)
LEFT OUTER JOIN `categories` `category` ON (`links`.`category_id`=`category`.`id`)
LEFT OUTER JOIN `votes` `votes` ON (`votes`.`link_id`=`links`.`id`)
WHERE (links.id = votes.link_id)
GROUP BY votes.link_id
ORDER BY (SUM(votes.karma_delta) - 1) / POW((TIMESTAMPDIFF(HOUR, links.created, NOW()) + 2), 1.5) DESC
LIMIT 20
The IF in the select was where my first troubles began. Seems it's an IF true/false THEN stuff ELSE other stuff END IF yet I can't get the syntax right. I tried to use Navicat's SQL builder but it constantly wanted me to place everything I had selected into the GROUP BY and that I think it all kinds of wrong.
What I am looking for in summary is to make this MySQL query work in PostreSQL. Thank you.
Current Progress
Just want to thank everybody for their help. This is what I have so far:
SELECT links_link.id, links_link.created, links_link.url, links_link.title, links_category.title, SUM(links_vote.karma_delta) AS karma, SUM(CASE WHEN links_vote.user_id = 1 THEN links_vote.karma_delta ELSE 0 END) AS user_vote
FROM links_link
LEFT OUTER JOIN auth_user ON (links_link.user_id = auth_user.id)
LEFT OUTER JOIN links_category ON (links_link.category_id = links_category.id)
LEFT OUTER JOIN links_vote ON (links_vote.link_id = links_link.id)
WHERE (links_link.id = links_vote.link_id)
GROUP BY links_link.id, links_link.created, links_link.url, links_link.title, links_category.title
ORDER BY links_link.created DESC
LIMIT 20
I had to make some table name changes and I am still working on my ORDER BY so till then we're just gonna cop out. Thanks again!
Have a look at this link GROUP BY
When GROUP BY is present, it is not
valid for the SELECT list expressions
to refer to ungrouped columns except
within aggregate functions, since
there would be more than one possible
value to return for an ungrouped
column.
You need to include all the select columns in the group by that are not part of the aggregate functions.
A few things:
Drop the backticks
Use a CASE statement instead of IF() CASE WHEN votes.use_id = 1 THEN votes.karma_delta ELSE 0 END
Change your timestampdiff to DATE_TRUNC('hour', now()) - DATE_TRUNC('hour', links.created) (you will need to then count the number of hours in the resulting interval. It would be much easier to compare timestamps)
Fix your GROUP BY and ORDER BY
Try to replace the IF with a case;
SUM(CASE WHEN votes.user_id = 1 THEN votes.karma_delta ELSE 0 END)
You also have to explicitly name every column or calculated column you use in the GROUP BY clause.